Как использовать VK API средствами php?

<?php
$params = array(
     'user_ids' => 1,
 );
$url = 'https://api.vk.com/method/users.get?'.http_build_query($params);
$res = file_get_contents($url);

function getUrl($url, $params) {
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_HEADER, false);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($ch, CURLOPT_POST, true);
	curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
	curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
	curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2049.0 Safari/537.36');
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
	$data = curl_exec($ch);
	curl_close($ch);
	return $data;
}

function getMethod($method, $params) { 
	$url = method_url.$method;
	$params = http_build_query($params)."&lang=".method_lang;
	$response = getUrl($url, $params);
	return json_decode($response, true);
}

$params = array('access_token' => "token");
	$result = getMethod("vk.method", $params);